Title :
Experimental and theoretical studies of bump formation during laser texturing of Ni-P disk substrates
Author :
Tam, A.C. ; Pour, I.K. ; Nguyen, T. ; Krajnovich, D. ; Baumgart, P. ; Bennet, T. ; Grioropoulos, C.
Author_Institution :
IBM Res. Div., Almaden Res. Center, San Jose, CA, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
We provide here extended experimental data on the bump shape formed on Ni-P disk substrate under various laser and substrate surface conditions, and describe a model for the Sombrero-shape bump formation based on competition between thermocapillary and chemicapillary flows. This model rationalizes a large body of experimental data and provides insight into how one might tailor bump shapes to specific requirements. For comparison, laser bump formation on non-Ni-P substrates has also been studied
Keywords :
hard discs; laser materials processing; nickel compounds; substrates; surface texture; Ni-P; Ni-P disk substrate; Sombrero-shape bump formation; chemicapillary flow; laser texturing; thermocapillary flow; Atomic force microscopy; Chemical lasers; Laser modes; Laser theory; Optical pulse shaping; Optical pulses; Shape; Space vector pulse width modulation; Surface emitting lasers; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
